Bay of Quinte Cladocera project: long-term changes in cladoceran community and size structure from four dated Bay of Quinte sediment cores (Version 1)

Version 1.These data were collected as part of a sediment core (paleolimnological) assessment of the Bay of Quinte, Lake Ontario. The goal of these data was to measure change in cladoceran community and size structure over time in response to historical trophic alteration. Cladoceran counts can be used to quantify assemblage metrics (e.g., relative abundance, diversity, concentration) while size structure responds to changes in predation pressure. Radioisotope activities were measured to construct core dating models and loss on ignition was used to quantify changes in organic and carbonate content. Overall, these data provide an overview of spatial and temporal change within the Bay of Quinte.版本1。本数据集采集自安大略湖昆特湾的沉积物岩芯古湖沼学评估项目。本数据集的采集目标是量化枝角类（Cladocera）群落与体型结构随时间的变化，以揭示其对历史营养状态改变的响应。枝角类计数可用于量化群落组配指标（如相对丰度、多样性、浓度），而体型结构则可反映捕食压力的变化。研究人员测定了放射性同位素活度以构建岩芯定年模型，并通过烧失量（loss on ignition）量化有机质与碳酸盐含量的变化。总体而言，本数据集全面呈现了昆特湾内的空间与时间尺度变化特征。